Place it right after the reveal in your edit, then follow it with Oh My God Wow for a second beat before Nelson's Ha-Ha! closes the scene with laughter. Keep it as the peak reaction in a short sequence, not buried under other clips, so each punch lands in turn.
Über diesen Sound
This seven-and-a-half-second voice clip delivers the line Holy Frick I'm Coemin in a drawn-out, excitable delivery that stretches the final word for comic effect. It feels silly and deliberately over the top, like someone losing control of a reaction in the middle of a joke. The stretched tone makes the punchline land as pure chaos rather than a calm remark.